Light
is the visible form of electromagnetic waves. All of these waves travel
at the speed of light. Light does not mass, because objects with mass
cannot have a velocity of 3 * 10^8 m/s. To occupy space, the object must
have volume. Since light has no mass, it has no volume. As light passes
through your windows, the volume of the window does not increase. This
is proof that light does not occupy space. Light and heat are two forms
of energy. Energy does not have mass of occupy space. The kinetic energy
of a moving object is a property of the object. This property does not
have mass or occupy space. I hope this answers your question.
